Ash removing apparatus for gas producers and the like



May 10, 1932. w. B7 CHAPMAN A SH REMOVING APPARATUS FOR GAS PROPUCERS AND THE LIKE Filed July 29, 1926 2 Sheets-Sheet 1 INVENTOR. W D, eiafww Y @i ATTORNEYS.

May 10, 1932. w. B. CHAPMAN 1,857,355

v ASH REMOVING APPARATUS FOR GAS PRQDUCERS AND THE LIKE 2 Sheets-Sheet 2 .Filed July 29, 1926 Mlwa, (Aw/warm.

ATTORNEYS.

i F u Patented May 10, 1932 UNHED sr rEs ArsNr oF FicE A WILLIAM B. CHAPMAN, or dAoKsoN HEIGHTS, NEW YORK, ASSIGNOR, BY Muslin AS- SIGNMENTS, TO THE ooornaanssnmnn CORPORATION, or MOUNT vnmromonxo,

A CORPORATION OF OHIO ASH REMOVING APPARATUS FoReAs rnonuonnsm THE LIKE Application filed July 29,

The invention relates to theremoval ofash from gas producers and gas generators, par-' ticularly in such manner as to permit the force of the blast within the generator to eject the ash therefrom. p

The invention also relates particularly to gas generators and gas producers of the dry bottom type and involves theuse of means for reducing the ash to such finesizes as may be removed by fluid pressure, in combination with a receptacle disposed beneath the fire bed into which receptacle the ash falls and from which it is ejected with'the aid of the blast pressure as above described.

The invention also involves a device to prevent arching over or clogging of the ash within the receptacle above mentioned and certain other features and advantages which will be in part obvious and in part specifically mentioned in the descriptlon hereinafter contained which, takenin conjunction with the accompanying drawings, discloses certain preferred embodiments of the, invention.

Such embodiments, however, are to be con- 1926. Serial Nb. 125,621. 1

' 8, to turn the agitator.

As the agitating member rotates in the bottom of the firebed, it reduces the ash in that vicinity to sizes small enough to pass through restricted openings in grate 2 andthe grate i880, constructed as to be adjustable as regardsthe rate at which ash will fall through it." For example, the grate may be made up of sections movable with regard to each other whereby theadjustment of the one section will serve to obstructinore or less the passage tion, whereby adequate opening for the blast is provided, regardless of the position to which the lower grate section is adjusted.

The ash falls throughv the grate as above described into an ash receptacle 18 illustrated in Fig. 1 as being of inverted conical shape and provided with a discharge'opening 19 at its bottom which is closed by a gate 20 except when ash is being discharged from the receptacle. a i

The blast is supplied through a suitable opening 21' beneath thegrate and since the agitating member-grinds up the ash to such small sizes that it will pass through the re- 'st-ricted openings in thegrate the pressure of theblast within receptacle 18 will be sufficient to force the ash out through opening 19 in the receptacle, when gate 20is open." In most cases the pressure of the blast of air or air mixed with steam will be suihcient not only to eject the ashes but also to conveythem through a pneumatic conveyor or thelike to any desired point of discharge;

v I preferalso to'provide' a dev ce for pre-' venting clogging or arch ng of the ash within receptacle 18, this device servingto maintain .i. way spirally through the ash'receptacle 18 and break up any archesor stoppages in the ash.

. In the present form of theinvention the ash in, receptacle 18 is also loosened up by means of radial fins 26 carried by cooling water pipe 27 which leads aXiallyinto, the

agitating member 3 and rotates with the lat-. ter, a rotary coupling 28being provided un derneath the fins26 to connect between pip'e 27 and a fixed coolingswater pipe 29 which passes through the; wall of receptacle 18. It

will be understood: that a further cooling water pipe 30 may be used in connection with the pipes above described for circulatmg the cooling water in accordance with known practice and it accordingly is not deemed necessary to describe thispart of the construc tion in detail. I

"As the fins, 26 turn around, the spaces, im-

. mediately behindthem tend to remain open,

thus affording "passageways through which the pressure of the blast may pass downward to the region of discharge opening 19 and act efiectively to force the. ash through the discharge opening- This is particularly necesa sary when large quantities of ash'are allowec to accumulate before being discharged, as they tend to keep the blast pressureaway from the point of discharge. At the same timethe chain 24:v turns around'as above dering 25 from dropping down too far.

When the ash is ejected through opening 19 as above described, certain gases are en- 7 trained with it and I prefer to carry away the ash and gases from opening 19, by a conduit32 which is shown in Fig. 1 as operated by fluid pressure through the medium of a steam injector nozzle 33, passing into the delivery end 34 of the conduit. When gate 20 is opened and steam under pressure passes through nozzle 33, the ash and entrained gases passing through opening 19 will be drawn into the delivery section 34 of conduit 32, along with any air which may pass in through the open end 35 of'such conduit. Thus the entrained gases are prevented from escaping and the pressure of the blast in the producer does not scatterthe dry ashes into unconfined spaces in ejecting them but aids in delivering them at any desired point.

The form ofthe invention shown in Figs. & and 5 isparticularly adapted for use in watergas generators which periodically are subjected to up'and down blasts of air and steam." Fig. 4 shows only the bottom portion of an ash receptacle 18a, the ash within whichis loosened bymeans of fins 26a and a chain 2% similar to members 24 and 26 above described, thereceptac le 18a beingprovided with unischarge opening 19a, normally closed by a pivoted gate 20a which is operated by an arm '36 and' perrnits the ash to pass into conduit- 32a which also carries oflthe gases entrained withthe ash. I V

An apparatus of the above nature,rwhen used in conjunction with a water-gas generator, may be periodicallyoperated in accordance with the cycle of the-air and steam runs, asby providing a pneumatic cylinder 37 for operating the arm 36, this cylinder being actuated automatically during each period when the air blast is passing up through the generator whereby gate 20a is opened each time the ash in receptaclelSa is'subjected to airblast pressure. Thus the ash. will lie-ejected' periodically in small quantities makingthe operation of the generator automatic and continuous insofar as the removal oi ash is concerned. For pneumatic ash conveying it is particularly desirable that the asheje'ction quantities in order to prevent T be in small clogging. K

V WVhile certain specific embodiments of the invention have been, describedit will be ob vious that many changes maybe made therei'nlwithout departing from its principles as defined in the appended claims. The reference in'thej claims to gas generators furthermore; should be understood as beingv made in a g e i Qnse and henceincluding apparatus makin p e u r aa 5 lid I claim:

1. In combination, a gas generator adaptto contain a fire bed and having an agitating member working in the bottom of the fire bed to reduce the ash to fine sizes, a receptacle disposed beneath the fire bed to receive the ash, means for introducing theblast for the firebed into said receptacle, said receptacle being provided with an ash dis charge opening whereby the pressure of the blast within the receptacle forces the ash out through said opening, and fluid pressure operated means for conveying the ash and entrained gases away from said discharge opening, and means operating in the ash Within said receptacle for preventing clogging of the ash therein.

2. In combination, a gas generator adapted to contain a fire bed and having means coacting with the fire bed for reducing the ash to fine sizes, a receptacle disposed beneath the fire bed to receive the ash, means for introducing the blast for the fire bed into said receptacle, said receptacle being provided with an ash discharge opening whereby the.

pressure of the blast within the receptacle forces the ash out through said opening, and means operating in the ash in said receptacle for affording effective blast pressure in the region of said discharge opening.

3. In combination, a gas generator, adapt-- ed to contain a fire bed and having means coacting with the fire bed for reducingthe ash to fine sizes, a receptacle disposed beneath the fire bed to receive the ash, means for introducing the blast for the fire bed into said receptacle, said receptacle being provided with an ash discharge opening whereby the pressure of the blast within the receptacle forces I the ash out through said opening, and means operating in the ash of said receptacle for affording effective blast pressure in the region of said discharge opening, said means com prising one or more rotary members turning in the ash.

agitating member, said rotary member being disposed in said ash receptacle and one or more fins carried by said rotary member for operating in the ash.

5. In combination, a gas generator adapted to contain a fire bed and having an agitating member working in the bottom of the fire bed to reduce the ash to fine sizes, a receptacle disposed beneath the fire bed. to receive the ash, means for introducing the blast for the fire bed into said receptacle, said receptacle being provided with an ash discharge opening, and means operating in the ash in said receptacle for loosening the ash therein to cause the blast pressure to force the ash through said discharge opening.

6. Incombination, a gas generator adapt-' ed to contain a fire bed and having an agi tating member working in the bottom of the fire bed to reduced the ash to fine sizes, means for blasting the fire bed, a receptacle subject to the blast pressure and disposed beneath the fire bed to receive the ash, an arm adjacent said receptacle and connected to rotate with said agitating member,.and means carried by said arm for loosening the ash within said receptacle, said receptacle being provided with an ash discharge opening whereb the pressure of the blast may force the as out through said opening.

7. In combination, a gas generator adapted to contain a fire bed and having means coacting with the fire bed for reducing the ash to fine sizes, a receptacle disposed beneath the fire bed to receive the ash, means for introducing the blast for the fire bed into said receptacle, said receptacle being provided with an ash discharge opening whereby the pressure of the blast within the receptacle forces the ash out through said opening, and means providing a passageway through the ash in said receptacle to make the blast pressure effective in the region of said discharge opening. 7

In testimony that I claim the foregoing, I have hereunto set my hand this 24 day of July, 1926. r 7

- I .1 WILLIAM B. CHAPMAN. 

